64531177608575 has 6 divisors (see below), whose sum is σ = 80018660234664. Its totient is φ = 51624942086840.

The previous prime is 64531177608563. The next prime is 64531177608607. The reversal of 64531177608575 is 57580677113546.

It is not a de Polignac number, because 64531177608575 - 2⁸ = 64531177608319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1290623552147 + ... + 1290623552196.

It is an arithmetic number, because the mean of its divisors is an integer number (13336443372444).

Almost surely, 2^{64531177608575} is an apocalyptic number.

64531177608575 is a deficient number, since it is larger than the sum of its proper divisors (15487482626089).

64531177608575 is a wasteful number, since it uses less digits than its factorization.

64531177608575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581247104353 (or 2581247104348 counting only the distinct ones).

The product of its (nonzero) digits is 148176000, while the sum is 65.

The spelling of 64531177608575 in words is "sixty-four trillion, five hundred thirty-one billion, one hundred seventy-seven million, six hundred eight thousand, five hundred seventy-five".